AdoptOpenJDK is now distributing OpenJDK msi installers. The installers will optionally updated the PATH and JAVA_HOME. We recommend removing Oralcle JAVA with the operating system supported method and installing OpenJDK 11 LTS. Version 7.0.2 of the ResCarta Toolkit supports OpenJDK 11.

AdoptOpenJDK is also providing updates to OpenJDK 8.

The most asked question concerns the use of 32bit JAVA on a 64bit machine. It you are using a 64bit operating system, download the 64bit JAVA from Oracle. The current url for JAVA 8 from Oracle is.

During the installation of the ResCarta Toolkit you will see that the installer selects 32bit or 64bit options based on your installed JAVA. If you run 32bit JAVA on a 64bit machine you will get poor performance and have access to only one gigabyte of memory.

Most ResCarta problems over the years involve early untested releases of JAVA by Oracle. See the history of releases at wikipedia. If you see a release date within a day or two of another release date, chances are you will be experiencing some malfunction. We advise updating JAVA only if you need to do so for some known reason.

64 bit machines and 64 bit JAVA

Most machines purchased in the last few years are going to be 64 bit capable and running 64 bit operating systems. The problem is that most web browsers are still 32bit by default. When you are prompted to download JAVA in most cases the resulting JAVA installation will be 32 bit. This means that your machine will only use a maximum of 1.3 gigabytes of memory even if you have 4, 8 or 16 gigbytes of memory in your machine.

This will cause the ResCarta Toolkit to install a 32 bit version for your machine with the same memory limitations.

To see what JAVA you have installed, open a command prompt/terminal and type the following...

If your results do not include the "64-Bit Server VM" statement then remove your currently installed JAVA and remove the ResCarta Toolkit if you have already installed it. (Don't worry we will keep the settings you already have). Then go to

Some Windows 10 users are reporting missing shortcuts after installation of ResCarta Toolkit Version 6. In cases reported these systems were upgraded from Windows 7 and had Version 5.1.x of the tools with shortcuts.

We are working on the Windows 10 installer to find the problem. Till then you can download the ResCarta6Menu.zip from our Sourceforge server. Unzip the file to a temporary location on your Windows 10 machine and then move the directory "ResCarta Tools 6.0.0" to this location on your system "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\ResCarta Tools 6.0.0" The quotes are necessary due to the spaces in the names.

Download 6.0.1 to remedy this problem when it arrives.

The Recipe

Second mouse click on the Start Icon to open Command Prompt(Admin)

Then change directory to the location where you unzipped the "ResCarta Tools 6.0.0" menu and paste the following command